Sudoku without number!

[eligame]

Hi guys,
I am developing a sudoku game. The game-play is like other Sudoku game but the design is very creative. I don’t know if players & other Sudoku fan like it or not.

So could you play and tell me if there is something I need to change in the game to make it perfect?
I’m finishing iOS version for the game. So I really expect some suggestions/ comments from game community.
You can test the game on facebook version here
Sudoku Fruit Heroes
Game trailer:

Thank you!